Connection

Several caves have been connected into Binkley since 2009. The first one to be connected was Guy Stover Cave on May 14, 2011. The next was Blowing Hole Cave, which was connected on February 11, 2012. Most recently, Miller Cave was connected on March 9, 2013. Each connection discovery has allowed easier access to various parts of the cave, and has facilitated further exploration. It is expected and hoped that more caves will be determined also to be connected to Binkley Cave, thereby making it easier for explorers to reach far-away locations inside the cave from the nearest entrances.

Binkley Cave

Binkley is big - - no, wait: big is an understatement. Seven miles were surveyed by the Bloomington Indiana Grotto in the late 1950s/early 1960s, and the ISS started working in the late 1960s, bringing the length up to 22 miles by 2006 or so. Efforts since 2009 have brought the cave to its current length of 41.72 miles, which ranks as number 8 on the US Long Cave list. In late summer 2014, tracing of several streams in the cave revealed that it is at least two or three times larger than currently known!

Blowing Hole Cave

The cave is sort of like a big stormwater drainage tube. Nearly two miles were surveyed around the same time the ISS started working in Binkley (in the late 1960s), but working conditions in the cave made it difficult in those days. Modern lighting and wetsuits have meant all the difference in the past three years, which during that time brought the length of the cave to 7 miles before it was recently discovered to be one and the same as Binkley. It is believed that the Blowing Hole section has many secrets waiting to be discovered, especially since so far, only one short segment of upper level passage has been found.

Welcome to the Indiana Speleological Survey

Simply put, our main purpose is to continue exploration and mapping of Binkley and other related caves south of Corydon, Indiana. We strive to include any cavers interested and able to help us; this is not a secret project, but does require careful coordination and organization in order to run smoothly.